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Finding the Fourth Proportional to 143,513.60, 215,241.60 and 68,633.60

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Solution

The fourth proportional to 143,513.60, 215,241.60 and 68,633.60 is: 102,936.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,513.60 : 215,241.60 = 68,633.60 : x
  2. Step 2: Convert to fraction form
    143,513.60/215,241.60 = 68,633.60/x
  3. Step 3: Cross multiply
    143,513.60x = 215,241.60 × 68,633.60
  4. Step 4: Simplify right side
    143,513.60x = 14,772,805,877.76
  5. Step 5: Solve for x
    x = 14,772,805,877.76/143,513.60
  6. Step 6: Final answer
    x = 102,936.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.